For psychological purposes the most important differences in conation are those in virtue of which the object is revealed as sensed or perceived or imaged or remembered or thought.

Mental life is indeed practical through and through. It begins in practice and it ends in practice.

Both expectations and memories are more than mere images founded on previous experience.

Curiosity begins as an act of tearing to pieces or analysis.

Thus the same object may supply a practical perception to one person and a speculative one to another, or the same person may perceive it partly practically and partly speculatively.

The thing of which the act of perception is the perception is experienced as something not mental.

Hence, in desiring, the more the enjoyment is delayed, the more fancy begins to weave about the object images of future fruition, and to clothe the desired object with properties calculated to inflame the impulse.